Lamp



Oct. 7, 1941. p; c; c ss 2,258,108

' LAMP Fil'ed June 3, 1959 2 Sheets-Sheet 1 INVENTOR. PA L 9. CALISSI IATTORNEY.

Oct. 7, 1 941 P. c. muss. 2,258,108

LAMP

Filed June 3, 1939 2 Sheets-Sheet 2 INVENTOR. PAUL C.CA|. ass\ ATTORNEY.

Patented Oct. 7, 1941 UNITED STATES" PATENT OFFICE Y 2,258,108 1 Y YPaul 0. Calissi, Philadelphia, laf, Application Juneait, 1939; SeriaLNo.277,209 5 Claims; c1. 240-81) This; invention relates to electric? lampsand has as its; principal object to providein the standard. of the; lampan: auxiliary light of such l'ow'w'attage that it maycserveeconomically: as. a pilot to dimlyvilluminate the; room in the immediatevicinity of the lamp. "Thus, when; the main lightingunit of the lamp isextinguished, the'pilotmay. be utilized to provide subdued illuminafion'sufiicient to enable: one entering the;

darkened room todistinguish objects and so avoid any danger ofgtripping;over them.

' invention: is an improvement over my prior Patent No.. 21563617,granted May 2, 1939, and has. as its. principal object the provision ofa construction for. enabling ready repl'acementinot only of the pilot asdesired but also of the glass orlike enclosure fortherlatter, at thesametime that it provides" for incorporating the pilot. in the lamp,standardwithout rendering the pilot so'fobtrusive as to reduce thedesired pleasing appearance ofithe lamp structure considered. as;

a whole, all of Whichwill be apparent. more. fully hereinafter.

v-In addition, .it' is; an object of the present in-' vention. toprovidean improved typeof open or harpesharped: frame within which the;pilot may. be disposed and which effectively connects together'the partsconstituting the enclosure for the 'pilot, the said frame being designedto accommodate the wiring inthe sidearms thereof insuchmanner? as toeffect-a neat and safe wiring; assembly. I

#11?" will be: understood; accordingly, that the presentinventionconsists substantiallyin the combination, construction, location andrelative arrangement of parts, alluas described hereinaftenzas shown in.the accompanying drawings and as; finally pointedouti 'in the appendedclaims. .v

In the: said accompanying drawings:

Figu-re'l i'san-elevational' view'of a'lamp structure constructed inaccordance with and embodying-the principles of the present invention;

Figure 2 is an enlarged vertical section showing the improved pilot lampassembly embodied in the standard of; the main lamp structure;

Eigure 3 is an elevational view of the main connecting member oi thepilot lamp assembly;

Figure 4 is an enlarged plan view of the said, main connecting member; r

V Eigure 5 is a cross-sectional viewon lines 5-5 oil-.Eigure 3 lookingin the directionof the ar Figure 6 ma cross sectional. view outlines 6-6- the element l3. The opposite side member I5 is is; provided with avertically extending internallyi thereof with transverse apertures 2l-2:L

of Figure 3 .looking; in the direction of the arrows; a

1 Figure. 7:.is an; elevational view of a lamp embodying a somewhatmodified form of the present invention;

Figure 8 a vertical sectional view of the modified construction of;lamp;

, Figure- 9 is' an elevational: view of a modified form of theconnecting member or frame such as is employed in the lamp of Figurefil;

- Figure 10 is a top plan View of theemember shown in Figure 9; and IFigure 1-1 is: a cross-sectional view taken on the line :|-'|:l ofFigure 9'.

Referring now more'particula-rly to. the drawings,, it will beobserved'that the" pilot lamp assembly, designated generally by thereference numeral I'llis: incorporated at the upper end of the: standard2H of the pedestal type lamp l2. While: the lamp shown in the drawingsis of the so-called floor lamp type, it will be understood that thepresent invention is: equally applicable to table andbridge: lamps Wherethe latter are. provided a straight length portion similar to: thestandard |-lillustrated.-

The-reference; character l3- designates generally the improved mainconnecting harp-like frame of. substantially-hollow rectangular shape;this element being formed with oppositely bowedsidevv members Mr and tiintegrally connected at their bottom ends by; the internally threadedboss l6, and at theirtop ends by thesolid head H havingawi-ringclearance cut out i-n'the side'- thereof, as at: L8, and'having inaddition two up standing spaced: apart lugs l9; I9, each of whichthre'adedr hole 18s; for a purposeto be described.

The side member-l4, as clearly appears inthe cross sectional viewsofFigures 5 and 6; is provided. with grooves M"- to reduce the weight ofprovided With-awiring clearance groove 20 which al-so'servestoreduce'the weight of the element [3, this groove terminating at opposite endscured in any suitable manner to the inner face of'the side member 14 atthe lower end there of-isl the pilot lamp socket bracket 22, the lattersupporting the socket 23 and the pilot lamp 24 of low wattage. Thesizeof the pilot lamp,

' socket. and bracketis such that they readily fit readily grasped bythe fingers for insertion into and removal from its socket.

The upper end of the standard H of the lamp is preferably of hollow ortubular construction to permit wiring therethrough, its upper end be-l'be clamped between the upper end of the stand- 5 ard II and the bottomface of the boss l6, as

clearly appears in Figure 2. Suitably secured to the cup is the switch26, Figure 2;, 's l 1ownpilot lamp 24 independently of the main lamp 21which is received within the socket 28 and is provided with theconventional lamp shade and reflector unit 29. The main lamp 21" iscontrolled by any suitable type of switch operated by means of theswitch knob 30. The socket 2B for the main lamp is secured to the upperhead l1 of the harp element l3 by means of screws threadedly engagingthe holes I9 in .the' lugs l9-|9. The switch knob 30 is of the typewhich may be bodily removed from its associated switch by the simpleexpedient 'of unscrewing it'from the latter.

Snugly fitted within and'resting upon the upper edge of the cup-shapedmember 25, the upper wall portion of which latter may have a perl'orateddesign therein, is an enclosure or globe 3| of glass or other suitablelight transmissible material, upon the upper edge 32 of which rests thehollow metal enclosure member 33. The globe 2|,' preferably, is frostedor otherwise rendered translucent to light and is provided with a bottomcollar which extends within the cup 25 inside the perforated portionthereof. The opaque enclosure member 33 embraces the upper end of theharp element l3 and the main lamp socket 28, being securely held infixed'position by means of the set screws 34, 34 threadedly engaged inthe head H of the harp element, thus securely holding the globe 3| inthe assembled position shown in Figure 2. The'inside diameter and shapeof the globe 3| and the enclosure '33 is such that, upon the removal ofthe set screws 34 and the switch knob 30, they may readily be removedfrom or replaced over the harp element |3, the pilot lamp assembly andthe main socket 23, the main lamp 21'having first'beenremoved, Theparticular design ofthe' globe 3| and the enclosure 33 may be varied asdesired, the particular shape or outline here shown not'being neces-lsary so long as'the internal diameters of'these two elements aresufficient to enable" the parts to be assembled or removed as abovedescribed.

To remove or replace thepilot'lain'p 24 with respect to its'socket23, itis merely necessary to loosen or remove the set screws 34 and to removethe' switch knob '30, and then to raise the glass globe 3| and theenclosure 33 (the 'main lamp 21 having first been removed) axially'withrespect to'th'e harp element l3 to a height sufiicient to permit accesstothepilot lamp. In the event that the lamp shade 29 is supported by theenclosure 33v as illustrated,it will be obvious that this will likewisemove in fixed relation with the members33. However, in the event thatthe lamp shade 29Tis of the type which requires removal of the same inorder to remove the main lamp 21, then, the lamp shade is not replaceduntil after the enclosure 33 is again fixed in place by the set screws34.

With reference to the intermediate connecting harp or frame l3, it willbe observed that it is of such construction that it serves effectivelynot only as a connector for the vertically spaced sections of the lampstandard and as a support for the pilot lamp and the parts immediatelyassociated with the latter, but also that it provides a means forsecuring neatly and safely in per- ;rnanently fixed position the wiringconductors for the lamp. As clearly appears in Figures 1 to -6, the lampconductors leading to the main lamp 21 extending upwardly through thelower section wired to and controlling the lighting of the pilo t" jlamp 24, it being understood thatconventional' wiring is employed topermit operation of the of the lamp'standard and into the bore of the'lowerboss I6 of the member I3 is thence threaded into and through theaperture 2| which communic'ates with the lower end of the wiringclearance groovev 20. The conductors referred to are thus accommodatedin this groove and pass outwardly thereof by way of the aperture 2| incommunication with the upper extremity of the groove and thence extendupwardly to the main lamp socket byway of the cut-out wiring clearancel8 formed in the side of the upper head H of the connecting'frame l3.The conductors leading to the pilot lamp extend upwardly through thebore of the lower boss IE, it being understood, of course, that theselatter conductors are conventionally connected in parallel with theconductors leading to the main lamp, the connection being effectedpreferably at a point immediately'below the connecting member l3, itbeing further understood that the switches for controlling the operationof the main lamp and pilot lamp are respectively included in circuitwith these lamps in conventional manner for insuring independent:operation thereof. By means of the frame member l3, the lamp conductorsare maintained in fixed relation and out of the way of the pilot bulband render the wiring assembly at once compact, secure and safe.

As has been heretofore indicated, the construction herein involvedis'adapted not only to socalled floor lamps but also to table lamps, inwhich latter the standard is of materially reduced length. Usually, thetable lamp is of necessity similar and more compact 'in the immediatevicinit'y'of the main lamp than is the floor lamp' are joined togetherby an internally threaded boss 38 instead of by a solid head as in theprevious case, the upper and lower bosses 38 and 33 being respectivelyprovided with transverse apertures40 and 4| in the side walls thereofthrough which are threaded the conductors which lie inlthe wiringclearance groove 42 formed in the side arm 31. c v V In this modifiedform of construction, the main lamp socket 43 is connected by means of asuitable nipple (not shown) directly to the connecting harp-like framemember, this nipple being inthreaded engagement with the internalthreadedabore of the upper-boss 38; The wiringqleadingz to the main:lampsocket 4:3? emerges from: the: upper extremity of the. wiring,clearance: groove: 42 andisthreaded through. the transverse open? ing,.411. inthe upper boss. 38 andthus. upwardly, tlirbughthe bore of thatvboss to the, lamp socket 43 In' all other respects, the harp-likeconnect"- in-g frame member ofthe herein-described modified formfunctions in the same manner andfor the-same'p urposeas that of the formpreviously described.

It will be noted that in the arrangement shown in Figures 1 to 6, theupper shell 33, which rests upon the globe 3| is secured in position bymeans of set screws 34 threadedly engaged into the solid head of theharp element I3. In the modified form of construction as shown inFigures 7 to 11, the upper shell 44, which is the equivalent of theshell 33 of Figure 2, is secured in place by means of set screws 4545threadedly carried by said shell and projecting into the annular groove46 of a holding member 41 secured in position above the harp-likeconnecting member. This shellholding member with its annular groove 46formed in the peripheral edge thereof eliminates the necessity ofaccurately registering the set screws 45 with threaded aperturestherefor as in the case of the construction shown in Figure 2.

As in the previously described construction, the upper shell 44 servesconjointly with the lower shell 48 to securely clamp in position theintermediate light transmissible globe 49 and said shells and globe whensecured together as shown conjointly provide a completely enclosedhousing for the pilot lamp 50, this housing being openable at will toremove and replace the pilot lamp by the simple expedient of looseningthe said screws 4545 sufiiciently to permit the upper shell 44 and theglobe 49 to be raised vertically to a height sufiicient to afford accessto the pilot lamp. It will be understood, of course, that in order toraise the shell 44, the main lamp switch knob must be removed and tothat end this knob is of the removable type as in the constructionpreviously described.

What is claimed as new and useful is:

1. An element for a lamp assembly comprising a substantially hollowrectangular shaped member having a pair of laterally spaced legs, aninternally threaded boss at the lower junction of said legs for securingsaid member to a supporting structure, and means at the upper junctionof said legs for supporting a lamp socket in vertically spaced relationto said supporting structure, said means being in the form of a solidhead having a wiring clearance groove in one side thereof, one of saidlegs being provided with means to receive and fixedly support a pilotlamp socket and removable lamp wholly between said legs.

2. In a lamp, a support therefor, a harp-like element secured to andextending axially of said support, said harp-like element including apair of laterally spaced legs joined together at their top and bottomextremities, means at the lower junction of said legs for securing saidelement to said support and at the upper junction of said legs forsupporting a main lamp socket immediately above said element and invertically extending position, an upwardly presenting cup-shaped opaquemember having its lower edge fixedly secured below said element, a lighttransmissible member movably associated with and arranged to rest uponsaid fixed cup-shaped member, a second opaque member engageable with theupper extremity of said light transmissible member and movable together:with: the: latter; said. second opaque memberbeing:v extended: upwardly.to; embracesaid main-5 lamp; socket; means forsecuring; sa dPse ond;opaque m m er fixedly i p sition. whereby to clamp saidlight'transmissible member ill-secured position between said: opaque memberssaid. last-mentioned means including a plurality" of set screwsarranged; circumferentially about and; extending radially through saidsecond. opaque member for engagement with a part disr; posed interiorlyof said opaque member and fixed to said harp-like element, and a pilotlamp disposed between the legs of said harp-like element whereby saidlamp is embraced within and completely enclosed by a surroundingenclosure formed of said opaque members and said lighttransmissiblemember.

3. An element for a lamp assembly as defined in claim 1 wherein thesolid head at the upper junction of said laterally spaced legs includesmeans for freely passing lamp conducting wires upwardly beyond said headwhile confining said wires within the perimetral limits of said head.

4. In a lamp, a support therefor, a harp-like element secured to andextending axially of said support, said harp-like element including apair of laterally spaced legs joined together at their top and bottomextremities, means at the lower junction of said legs for securing saidelement to said support and at the upper junction of said legs forsupporting a main lamp socket immediately above said element and invertically extending position, an upwardly presenting cupshaped opaquemember having its lower edge fixedly secured below said element, a lighttransmissible member movably associated with and arranged to rest uponsaid fixed cup-shaped member, a second opaque member engageable with theupper extremity of said light transmissible member and movable togetherwith the latter, said second opaque member being extended upwardly toembrace said main lamp socket, means for securing said second opaquemember fixedly in position whereby to clamp said light transmissiblemember in secured position between said opaque members, and a pilot lampdisposed between the legs of said harp-like element whereby said lamp isembraced within and completely enclosed by a surrounding enclosureformed of said opaque members and said light transmissible member, saidlast-mentioned means including a plurality of set screws spacedcircumferentially about said second opaque member and extending radiallytherethrough and a solid head provided at the upper junction of the legsof said harplike element having circumferentially spaced threadedsockets therein for respectively receiving said set screws. 7

5. In a lamp, a support therefor, a harp-like element secured to andextending axially of said support, said harp-like element including apair of laterally spaced legs joined together at their top and bottomextremities, means at the lower junction of said legs for securing saidelement to said support and at the upper junction of said legs forsupporting a main lamp socket immediately above said element and invertically extending position, an upwardly presenting cupshaped opaquemember having its lower edge fixedly secured below said element, a lighttransmissible member movably associated with and arranged to rest uponsaid fixed cup-shaped member, a second opaque member engageable with theupper extremity of said light transmissible member and movable togetherwith the latmeans for securing said second opaque member fixedly inposition whereby to clamp said light transmissible member in securedposition between said opaque members, and a pilot lamp disposed betweenthe legs of said harp-like element whereby said lamp is embraced withinand completely enclosed by a surrounding enclosure formed of said opaquemembers and said light transmissible 10 ter, said second opaque memberbeing extended upwardly to embrace said main lamp socket;

member, said last-mentioned means including a plurality of set screwsspaced circumferential 1y about said second opaque member and extendingradially therethrough, and a circular member. disposed above and securedto the upper junction of the legs of said harp-like member and having anannular groove therein adapted to receive said set screws.

' PAUL C. CALISSI.

